Stock material or miscellaneous articles – Composite – Of addition polymer from unsaturated monomers
Patent
1990-04-26
1991-03-19
Buffalow, Edith
Stock material or miscellaneous articles
Composite
Of addition polymer from unsaturated monomers
428340, 428910, 4289033, B32B 2708
Patent
active
050010166
ABSTRACT:
A heat shrinkable composite film comprises a core layer formed of (a) a straight chain, low density polyethylene having a density of 0.890-0.905 g/cm.sup.3 and a Vicat softening point of 60.degree.80.degree. C. and/or (b) a copolymer of propylene and one or more .alpha.-olefins with 2-8 carbon atoms having a Vicat softening point of 70.degree.110.degree. C., and two outer layers laminated over the opposite surfaces of the core layer and each formed of (c) a crystalline polypropylene resin having a melting point of 135.degree.150.degree. C., the core layer having a thickness of 30-80% of the total thickness of the outer layers and the core layer.
REFERENCES:
patent: 3754063 (1973-08-01), Schirmer
patent: 4049147 (1977-09-01), Stiles et al.
patent: 4277578 (1981-07-01), Yoshimura
patent: 4302557 (1981-11-01), Yoshimura
patent: 4336212 (1982-06-01), Yoshimura
patent: 4336350 (1982-06-01), Yoshimura
patent: 4379888 (1983-04-01), Yoshimura
patent: 4390385 (1983-06-01), Ferguson et al.
patent: 4430378 (1984-02-01), Yoshimura
patent: 4755403 (1988-07-01), Ferguson
Ishiguro Nobuya
Kondo Kazuo
Buffalow Edith
Okura Industrial Co., Ltd.
LandOfFree
Heat shrinkable composite film and packaging method using same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Heat shrinkable composite film and packaging method using same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat shrinkable composite film and packaging method using same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2009417